Combined riding and walking cultivator.



No. 820,043- I PATENTED MAY 8, 1906. W. .S. GRAHAM.

COMBINED RIDING AND WALKING GULTIVATOR.

APPLICATION FILED OOT.7, 1905.

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IHIHIIHHILIlIH No. 820,043. PATENTED MAY-8, 1906.

W. s. GRAHAM.

COMBINED RIDING AND WALKING CULTIVATOR. APPLICATION LBDOOTJI. 1905.

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No. 820,043. PATENTED MAY 8, 1906.

W. S. GRAHAM. COMBINED RIDING AND WALKING GULTIVATOR.

APPLICATION FILED 0017,1905.

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rTn sTATEs PATENT OFFICE.

WILLIAM S. GRAHAM, OF CANTON, ILLINOIS, ASSIGNOR TO PARLIN & ORENDORFF COMPANY, OF CANTON, ILLINOIS, A CORPORATION OF ILLINOIS.

Specification of Letters Patent.

'ratenteol May 8, 1906.

Application filed October 7. 1905- Serial No. 281,724.

To aZZ whmn it may concern.-

Be it known that I, WILLIAM S. GRAHAM, a citizen of the United States, residing at Canton, in the county of Fulton and State of Illinois, have invented certain new and useful Improvements in Combined Riding and Walking Cultivators, of which the following is a specification.

My invention relates to improvements in combined riding and walking cultivators, and particularly to that type of machine known as the one-row machine.

Some of the features contained herein embody improvements on the device shown in the patent recently issued, No. 794,796, dated July 18, 1905.

My ob'ect is to construct a simple one-row machine aving a main operating device comprising a spring adapted in one position of the parts to hold the shovel-frames in elevated position and in another position of the parts to operate to hold the operating-lever in its elevated position. I also have shown in combination mechanism for changing the position of the carrying-wheels for the purpose of properly balancing the machine.

In the drawings, Figure 1 is a plan view of my machine. Fig. 2 is a side elevation with the shovel-frames in depressed position. Fig. 3 is a side elevation of parts of the main operating-spring and connecting devices. Figs. 4 and 5 are detail Views of the operating-lever for the shovel-frames and the parts connected therewith. Fig. 6 is a detail view of part of the lifting mechanism for the shovel-frames.

Like parts are indicated by similar letters of reference throughout the different views.

The frame of my machine comprises the beam A and the two connecting-beams B B, extending rearwardly therefrom, which constitute supports for the different parts. The axle for the carrying-wheels is indicated by C and extends across the beams B B and is pivotally supported thereon. This axle C is 5 \of the usual U shape, and on the ends of the axle are pivoted the carrying-wheels D. There are braces extending from the beams B B to the lower end of the cross-piece F. This cross-piece F is shaped in a manner somewhat corresponding to the axle and at :its lower end constitutes a journal for the yoke connection of theshovel-frames H. It

is supported by the beam A and the beams B B, as indicated in Fig. 1.

I have shown, preferably, two shovelframes, one frame being pivoted at each end of the supporting-piece F. The seat for the operator, as indicated in Fig. 1, is connected to the beams B B. Across the forward part of the machine and supported by the beams B B and pivotally secured in the bearings a, which extend from said beams B B, is a rockshaft (1 adapted to oscillate within its bearings. A rod (indicated by cf, Fig 1) extends from the beam B on the right-hand side of the machine and constitutes a support for the notched segment a Secured to the end of the rock-shaft a in close proximity to the notched segment a is an operating-lever a From this construction it will be seen that the rock-shaft a is oscillated by the lever (1 The lower end of the lever a is provided with an eye-shaped projection, as indicated in Fig. 3. A link a connects the eye end of the lever to the axle C. A corresponding link, also marked a, on the left-hand side of the machine, connects the left end of the rock-shaft a to the axle C, as indicated in Fig. 1. By this construction it will be apparent that the operator by moving the lever a can change the relative position of the carrying-wheels to the frame of the machine and-in this way moves the wheels back and forth for the purpose of balancing the machine for changes in the weight of the operators who run the machine.

To the rock-shaft a there are fitted two collars, (indicated by (1 one on each side thereof. These collars are adjustably secured to said rock-shaft. Bifurcated bellcrank levers 0., comprising couplings between the shovel-frame and operating-lever, are pivoted on said shaft and secured in proper position by means of the collars, as indicated in Fig. 6, the adjustment of the collars permitting a proper relative location of the bell-cranks to the shovel-frames H, there being one bell-crank provided for each shovel-frame. The upper arm of each bellcrank lever is pivotally secured to a rod a and the lower arm of said bell-crank lever is pivotally connected with an arm a", which in turn connects with a chain a, connecting with the shovel-frame H. These latter connections are somewhat the same as shown in my previous application, and therefore are not described in further detail.

On each side of the machine I have shown the rod a pivotally connected to a stud b, projecting from the operating-lever b This lever is formed with the usual spring-pressed detent b which is operated by a latch in the usual manner, and the detent b engages the notches formed in the upper edge of the segment b This segment and the operatin lever b are pivotally connected to the stud b, Fig. 2, which projects from the beamsB.

B. The pivotal point of connection is indicated by 5 There is formed in the rearward side of the segment b a projecting piece I), which is formed with an opening. Through this opening extends the end of the spring b and the opposite end of the spring b is pivotally connected to the intermittent arm of the bell-crank lever 07 through the medium of a In this manner I have shown this main operating-spring 6 connected at one of its ends to one of the arms of the bellcrank lever a and at its opposite end to the segment 5 The segment is formed with a tailpiece ac to limit its upward movement. For the purpose of changing this lifting tendency of the s ring b7 I have provided the upper arm of t e bell-crank with a number of ditl'erent points of attachment, these being shown in the drawings, thus providing for gangs of different weight.

It will be apparent that when the main operating-lever b is in elevated position, as indicated in Fig. 2, the main operatingspring, I) will extend above the pivotal point If, and the tension of said spring will tend to hold the main operating-lever b" and through it the segment b in elevated position. When, however, the operating-lever is depressed, as shown in Fig. 3, and the shovel-frames elevated, the main operating-spring will lie below the pivotal point 6 and the force exerted by the spring will be almost in direct line parallel with the main operatingrlever b Consequently the tension of the sprin b will be expended in holding the shove -frames in their elevated position. From this description it is seen that the spring 1) acts to hold both the shovel-irames in elevated position when the parts are in the positions indicated by Fig. 3', since both the collars a are rigidly secured to the rock-shaft a and when the shovel-frames are in depressed position the tension of the main operating-spring 6 acts to hold the lever b, which is placed at the right-hand side of the machine, in its elevated position.

The arm 11" carries a stop, (indicated in Figs. 2 and 3,) which stop when the shovelframes are in depressed position is out of contact with the crank-arm a but when the shovel-frame is partially raised, as indicated in Fig. 3, the stop contacts against the arm 0. and said arm a and crank-arm a thereby comprise a compound lever which: multiplies the movement transmitted by the operatinglever bto the shovel-frames 1-1. This device is explained more fully in my previous patent, No. 794,796.

- The chain a (shown in Fig. 3) has the usual spring connection to'the shovel-frame.

' The chain extends through the spring a. and

connects to the lower end of the spring a. and the link (1/ connects with the upper end of the spring, so that when the chain bears against the lower end of this spring the spring will first be pressed and then the shovel-frame will be elevated with the spring in depressed position, the object being to avoid a sudden jerking movement of the frame.

Having thus described, my invention, I claim 1. In a cultivator, the combination of shovel-frames, a main operating-lever, connections between the shovel-frames, a main operating-spring, connections between the spring and lever, means for moving the connecting-point of said lever and spring from a position above the pivotal point of'said operating-lever to a position below the same, for the purpose specified.

2. In a cultivator, the combination of shovel-frames, a main 0 eratingspr' means connecting one end oi said springw i di said shovel-flames and the other end of said spring with said operating-lever abovev the pivotal point of said lever when said lever is in elevated position, and means for lowering the end ofsaid spring below the pivotal point of said lever when said lever is; in depressed position, for the purpose specified.

3. In a cultivator, the combination of a pair ofshovel-frames, a rock-shaft, adjustable couplings secured to said rock-shaft, connections between said-couplings and said shovel-frames, a main controlling-lever secured at one end to one of said couplings, and a main operating-spring normally secured at its opposite end to said controlling-lever above its pivotal point, but adaptedwhen said lever is depressed tobe connected to said lever below its pivotal point, for the purpose specified.

4. In a cultivator, the combination of a pair of shovel-frames with a main 0 eratin spring connected at one end to sai shove frames, an operating-lever, and an intermediate device connected therewith, means for connecting said spring direct, to said intermediate device and arranged to hold said intermediate device and said lever in elevated position when the shovel-frames are depressed, and to hold said frames in elevated'position when said lever is depressed, for they purpose specified.

5. In a cultivator, the combination of a machine-frame, axle and carrying wheels,

with a main operating-spring, a rock-shaft, couplings in sa1d shaft, an operating-lever for said shaft, connections between said shaft and said operating-lever, and connections between said main spring and said couplings, shovelframes, connections between said shovelframes and said couplings, a segment, a lever therefor, means for connecting said segment and said spring normally above the pivotal point of said segment and lever, but adapted to move to a polnt below said pivotal point, for the purpose s ecified.

6. In a cultivator, s ovel-frames, raising and lowering devices for each 01 said shovelframes, comprising a bifurcated bell-crank lever, pivoted on a support, and a collar ad- 1 justably secured to said support within the bifurcation of said lever, substantially as and for the purpose specified.

7. In a cultivator, shovel-frames, raising 20 and lowering devices for each of said shovelframes comprising a bell-crank lever, and a spring connected to one arm of said lever, said arm being provided ith different points of attachment for said spring, substantially as and tor the purpose specified.

In testimony whereof I have hereunto set my hand this 2d day of October, A. D. 1905.

WILLIAM S. GRAHAM.

Witnesses: C. B. CHANDLER, R. A. HALL. 

